Self supporting water bottom



Nov. l, 1932. J. c. MARTIN, JR

SELF SUPPORTING WATER BOTTOM 5 Sheets-Sheet 1 Original Filed Aug. 21, 1928 N .ANN

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A TTORNEYI Nov. 1, 1932a J. c. MARTIN, JR

SELF SUPPORTING WATER BOTTOM 5 sneetssneet 2 Original Filed Aug. 2l, 1928 n R. J f w 0y E Wm M Et 40 Wwn IMw/A Jn Y B Nov. l, 1932. J. c. MARTIN, JR

SELF SUPPORTING WATER BOTTOM Original Filed Aug. 21, 1928 3 Sheets-Sheet I5 INVEN TOR.

A TTORNEY Patented Nov. 1, 1932 PATENT OFFICE..

JESSE CrMVARTIN, JR., OF LOS ANGELES, CALIFORNIA SELF SUPPORTING WATER BOTTOM ,Reled for abandoned application Serial No. 301,124, led vAugust; 21, 1928.y This application filed August 17, 1932. VSerial No. 629,244.

The invention relates to boilers and has as an object the provision of a boiler equipped with a water bottom that is self-supporting between the water legs of a boiler.

It is a further object of the invention to provide a self-supporting water bottom that may be readily installed.

It is 'a further obj ect of the invention to improve in some respects upon the device disclosed in my Patent No. 1,663,806, dated March 27, 1928.

Further objects of the invention will appear from the following description when read in connection with the accompanying drawings showing physicalembodiments of the invention, and wherein Fig. 1 isa detail central vertical section of a portion of a iirebox showing the invention installed;

Fig. 2 is a perspective view of one-half of one form of the invention;

Fig. 3 is a vertical transverse section w through the irebox ofk a boiler showing the form of the invention of Figs. 1 and 2 installed therein; Y ,n Fig. a* is a detail'transverse section of a modiiication of the rform of the invention shown'in Figs. 1 to 3;

Figs. 5 and are detail transverse sections of a portion of a ireboX showing further modiiications of the invention, and

` Fig. 7l 1s a detail central vertical longitudinal section of the form of the inventionv shown in Fig. 6, showing the air opening F in the bottom of the rebox but omitting the prises a front Vwater leg 10, a rear water leg 11, and side water legs 12, 13, the water legs downwardly terminating in a mud ring 14.

As shown the water bottom comprises a carrier sheet 15 shown in this form of the invention as comprising the lower wall of each of the wat-er bottom units illustrated,

the carrier sheet 15 being turned downwardly at its edges as at 16, there being welded or otherwise secured to the mud ring. The

Y sheet 15.

water b ottomin this form of the device is Yshown'as comprising two chambers, one opendownwardly at 18, 19, and 20, the edges ofV said margins beingwelded to the carrier The remaining margin .of each sheet is turnedupwardly as at'21 and the ends v22, 23 of the end margins 19, 20 are also flaredk outwardly merging into the upturned margin 21, the lower edges of portions 22,123 being welded to the carrier sheet 15 as indicated at 24, it being understood that the kportion 22 is likewise securedto the carrier sheet.

fall into a surface which may when placed Yin the boiler form a portion of the inside side sheet thereof, the edges of flanges 21, 22, and 23 being welded to the edge of an opening in the side sheet into which the anges seat. 1n the case of the application f of the invention to existing boilers, said opening may be ormedby cutting out the inside sideV sheets by the use of an oxyacetylene torch.

To provide ample strength for supporting the water bottoms without theuse of underlying slings,the carrier sheet 15 is desirably made heavier than the remaining portions of the water bottom and heavier than the usual side sheets of the boiler. The carrier sheet must vbe sufficiently heavy to bear not onlythe weight of the water bottoms and the water contained therein, but must also support the refractory linings to be described and, if necessary, the weight of workmen when making repairs upon the boiler, carrying such weights without support at its ends since the water bottom as shown terminates short of the ends oi the irebox. In making repairs upon boilers, it is often necessary to place jack screws between the bottom of the tirebox and the crown sheet of the boiler and The flangesv 16,21, 22, 23, as completed i 2 gaseosa' the carrier sheet must be suiciently strong to avoid deformation even when m such repairs.

lgs. 1 to 3 inclusive, the separate units of the water bottom shown are spaced lapart at the center of the firebox and an' air inlet o nin is provided through thehcar'rler slliet, t e remainder of the s ace between the units being lined with re ractories, as i6 iirebrick 26,21 frame 27 being desirably placed about the opening.

plates 28, 29, Fig. 1, are supported un the ends of carrier sheet 15 and ousing p tes 30, 31 are shown to complete the enclosure of the irebox at the ends of the water bottom. A ash wall 32 of refractory material and a filling 33 of the same material are Shown at the rear end of the rebox and at the front thereof a lining 34, 35 of refracmaterial is shown to complete the protection of the housing. iIf desired the carrier sheet 15 may be initially formed in two parts which may be welded together as indicated at 36, Fig. 8, or the two parts thereof may be lapped zand-riveted or otherwise secured to ether as yindicated at 37, Fig. 4. This mo ification lmay be utilized for the purpose of a more ready insertion of the structure into existing `,(yfueboxes.

y Blow if connections 38 are shown by way 4kof ilahged connections secured to the lower iside of the carrier sheet 15 about openings therein'. A liquid fuel burner is diagram- 35 matically illustrated at 39.

iet-In the modication shown in Fig. 5, the i carrier sheet 15 forms the upper wall of the water bottoms and the lower wall thereof, shown at 40, may be secured to the carrier wsheet 15 in the same manner as illustrated forfthe wallv` 17 of the form of the invention shown in Figs. 1 to 4 inclusive. In this form r.also a'refractory lining 26 is shown super- ."posed uponthe sheet 15 to protect the portionthereof which is nc-t protected by contact with water or steam.

In the modification shown in Figs. 6 and 7, the water bottom is made continuous across the irebox and is providedl with a centreblow-o connection 41. In this form of the invention the lower wall of the water bottom serves as a carrier sheet, the ends of i the up r wall 43 being bent downwardly as at 44 i 7, and the edges of the sheet 43 5 are nt downwardly as at 45 to be secured to the lower wall 42 about the air inlet opening 46, which opening thus passes completely through the water bottom. A of refractory material 47 is shown C over the center of the continuous water bot-V '1 tol-nto provide a locality of less heat to assist v *inthe circulation of water in the water bottoin, and to prevent warping.

The upper wall 43 in this form of the invention has its edges turned in flanges corresponding to portions 21, 22, 23 of Figs. 1 and 2, a welded line 24 being indicated where the lower edges of flanges 22', 23 are secured to the ends 15 of lower wall 42.

In the form of Figs. 6 and 7, the invention is desirable for use 1n locomotives of smaller size than the other forms shown.

Mino-r changes may be made in the physical embodiment of the invention within the scope of the appended claims without departing from the spirit thereof.

claim:

1. A self-supporting water bottom comprising, in com ination, a relatively heavy carrier sheet forming one wall of a water enclosing space having an air opening adjacent its central portion, a second relatively light sheet spaced from the first named sheet forming a second wall of the water enclosing space, the end margins of said second sheet and ortions thereof adjacent the longitudinal euges of said opening turned into contact with and joined to said carrier sheet to complete a water containing enclosure.

2. A multiple unit self-supporting water bottom comprising, in combination, a carrier sheet extending between the side water legs of a boiler and secured thereto adjacent one e Ue of an opening formed in each Water leg, a pair of sheets completingeach unit of the water bottom, the bodies of said last named sheets spaced from the carrier sheets and having their inner and end margins turned toward and secured to the carrier sheets and their outer margins secured to said water legs adjacent the opposite edges and ends of said openings, and means to conduct water from the barrel of the boiler to said units.

3. A self-sup orting water bottom comprising, in com ination, a relatively heavy carrier sheet having its side margins turned at an angle to the body thereof for attachment to the side water legs of a irebox at one side each of an opening in each water leg, a pair of sheets of relatively lighter material having side and end margins turned to contact with and secured to the surface of the carrier sheet with the body of said second sheets spaced from the carrier sheet to enclose water bottoni units, the outer margins of each of said second sheets turned at an angle to the body thereof for attachment to said water legs at the remaining sides and ends of said openings whereby to provide a water bottom which is self-supporting between said side legs.

4. A self-supporting water bottom comprising, in combination, a relatively heavy carrier sheet forming the bottom wall of the water bottom and having its side margins turned downwardly for attachment to the mudv ring of a boiler at the sides of a irebox, a relatively lighter plate spaced from said carrier sheet completing the enclosure of a.

vvater oontaining chamber, having its end margins turned to contact With and secured to the surface of the carrier Vsheet and having a side margin turned into a flange for attachnient to the inside side sheet of a irebOX at a side and the ends of an opening therein adjacent the mud ring.

In testimony whereof I have hereunto set my hand this 18th day of August, 1932.

JESSE C. MARTIN, JR. 

